20778815512

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{809}}^1\times {\mathrm{35281}}^1$

素因数の和:36116

約数の個数: 64

約数和(自身を含む): 48011745600

約数和(自身を除く): 27232930088

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 809, 1618, 3236, 5663, 6472, 10517, 11326, 21034, 22652, 35281, 42068, 45304, 70562, 73619, 84136, 141124, 147238, 246967, 282248, 294476, 458653, 493934, 588952, 917306, 987868, 1834612, 1975736, 3210571, 3669224, 6421142, 12842284, 25684568, 28542329, 57084658, 114169316, 199796303, 228338632, 371050277, 399592606, 742100554, 799185212, 1484201108, 1598370424, 2597351939, 2968402216, 5194703878, 10389407756, 20778815512]

約数ペア:

[(1, 20778815512), (2, 10389407756), (4, 5194703878), (7, 2968402216), (8, 2597351939), (13, 1598370424), (14, 1484201108), (26, 799185212), (28, 742100554), (52, 399592606), (56, 371050277), (91, 228338632), (104, 199796303), (182, 114169316), (364, 57084658), (728, 28542329), (809, 25684568), (1618, 12842284), (3236, 6421142), (5663, 3669224), (6472, 3210571), (10517, 1975736), (11326, 1834612), (21034, 987868), (22652, 917306), (35281, 588952), (42068, 493934), (45304, 458653), (70562, 294476), (73619, 282248), (84136, 246967), (141124, 147238)]